Bsi bs en 03102 2013

BSI Standards Publication BS EN 3102 2013 Aerospace series — Sealants — Test methods — Determination of low temperature flexibility BS EN 3102 2013 BRITISH STANDARD National foreword This British Stan[.]

BSI Standards Publication

BS EN 3102:2013

Aerospace series — Sealants — Test methods — Determination

of low-temperature flexibility

National foreword

This British Standard is the UK implementation of EN 3102:2013 The UK participation in its preparation was entrusted to Technical Committee ACE/65/-/3, Paints, Surface Finish and Protective Treatments for Aerospace Purposes

A list of organizations represented on this committee can be obtained on request to its secretary

This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application

© The British Standards Institution 2013

Published by BSI Standards Limited 2013 ISBN 978 0 580 79250 2

ICS 49.025.99

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013

Amendments issued since publication

BS EN 3102:2013 EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

February 2013

ICS 49.025.99

English Version

Aerospace series - Sealants - Test methods - Determination of

low-temperature flexibility

Série aérospatiale - Produits d'étanchéité - Methodes

d'essai - Détermination de la flexibilité à basse température

Luft- und Raumfahrt - Dichtmassen - Prüfverfahren -

Bestimmung der Kälteflexibilität

This European Standard was approved by CEN on 24 August 2012

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member

This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E FÜ R N O R M U N G

Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2013 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members

Ref No EN 3102:2013: E

Contents Page

Foreword 3

1 Scope 4

2 Normative references 4

3 Terms and definitions 4

4 Principle of the method 4

5 Apparatus and accessories 4

5.1 Apparatus 4

5.2 Accessories 5

6 Test pieces 5

6.1 Dimensions of material strips (substrates) 5

6.2 Shape and manufacture 5

6.3 Curing and exposure methods 5

6.4 Number 6

7 Procedure 6

8 Designation 6

9 Evaluation 7

10 Test report 7

BS EN 3102:2013

EN 3102:2013 (E)

3

Foreword

This document (EN 3102:2013) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN)

After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2013, and conflicting national standards shall be withdrawn at the latest by August 2013

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom

1 Scope

This European Standard defines the test method for the determination of the operability of a cured sealant during and after submission to a bending load at low temperatures (low-temperature flexibility)

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application For dated references, only the edition cited applies For undated references, the latest edition of the referenced document (including any amendments) applies

EN 2090, Aerospace series - Aluminium alloy AL-P2024-T3 - Clad sheet and strip 0,3 mm <a <6 mm

ISO 1817, Rubber, vulcanized — Determination of the effect of liquids

ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1: Tension/

compression testing machines — Verification and calibration of the force-measuring system

3 Terms and definitions

For the purposes of this document, the following definition applies:

3.1

Low-temperature flexibility

The resistance of a sealant to cracking when submitted to a bending load at low temperatures using the test equipment as described in 5.1

4 Principle of the method

The sealant is applied on a strip of material (substrate) After curing of the sealant, the test pieces are directly and/or after exposure to the test media submitted to a bending test at low temperatures

Following this bending test, the test pieces are visually inspected in order to detect any cracking

5 Apparatus and accessories

5.1 Apparatus

 Tensile testing machine (suitable for tensile and compression tests) in accordance with ISO 7500-1, category 1, allowing for a speed of 960 mm/min;

 mounting device — adapted to the tensile testing machine — for clamping of test pieces The mounting device shall ensure the clamping of the test piece sideways from the sealant over a length of 75 mm Installations allowing for the mounting of several test pieces simultaneously may also be used (an example of such a device is given in figure 1);

 load application device (adapted to the traverse of the tensile testing machine);

 cold chamber (adapted to the above-mentioned tensile testing machine, in which the required test temperature can be set (temperature tolerance: ± 1 °C);

 oven with forced aeration (temperature tolerance: ± 1 °C);

 spatula

BS EN 3102:2013

EN 3102:2013 (E)

5

Key

1 Mounting device

2 Sealant

3 Material strip

Free motion: ± 20 mm (measured at the end of the test plate corresponding to approx ± 15°)

Plate thickness: 1,0 mm

Figure 1 — Example of testing device

5.2 Accessories

 Cleaning agent, e.g ethyl acetate;

 material strips (substrate) in material according to EN 2090, unless otherwise specified in the material standard;

 test fluid no 1, in accordance with ISO 1817

6 Test pieces

6.1 Dimensions of material strips (substrates)

1,0 mm × 70 mm × 150 mm

6.2 Shape and manufacture

The test pieces shall be manufactured using material strips as per 6.1

Immediately prior to the manufacture of the test pieces, the material strips (substrates) shall be cleaned and, if required by the material standard, a primer shall be applied

Then a (2,5 ± 0,2) mm thick coat of sealant shall be applied over a length of 100 mm and a width of 40 mm by means of a spatula on one side only and in the middle of the material strip (substrate)

NOTE An open mould may be used for the manufacture of test pieces The manufacture of test pieces shall be completed within the application time

6.3 Curing and exposure methods

The test pieces shall be cured in accordance with the material standard and, if required, exposed according to the relevant method as defined in table 1 Testing or cooling to test temperature shall begin within 10 min after removal from the relevant test medium

Table 1 — Exposure conditions

A without exposure

B dry heat (95 ± 1) °C (48 ± 2) h

C dry heat (120 ± 1) °C 7 d ± 2 h

D test fluid no 1 (60 ± 1) °C (120 ± 2) h

followed by test fluid no 1 (70 ± 1) °C (60 ± 2) h

followed by test fluid no 1 (80 ± 1) °C (6 ± 0,25) h

followed by 6 cycles a at dry heat (130 ± 1) °C (4 ± 0,25) h dry heat (160 ± 1) °C (40 ± 5) min

dry heat (180 ± 2) °C (60 ± 5) min

a After each cycle the test pieces shall be cooled to 40 °C min at a temperature of (23 ± 2) °C, before starting a new cycle with an exposure at 130 °C

6.4 Number

Unless otherwise specified in the technical specification, two test pieces shall be used for each test and for each exposure

7 Procedure

The test piece shall be mounted in the clamping device over a length of 75 mm, avoiding any contact with the sealant The temperature of the cold chamber shall be lowered to the temperature specified in the relevant material standard (unless otherwise specified: (−55 ± 3) °C), and maintained for 2 h, following this the test piece shall be submitted to 130 flexure cycles of ± 20 mm (measured at the end of the test plate; this corresponds to an angle of ± 15°) The test speed shall be 960 mm/min., so that one cycle is completed within

5 s

On completion of the bending test, the test pieces shall be brought to a temperature of (23 ± 2) °C and the sealant visually inspected in order to detect any cracks, detachment or other damage

8 Designation

EXAMPLE

Description block Identity block LOW-TEMPERATURE

Number of this standard

Method of exposure

BS EN 3102:2013

EN 3102:2013 (E)

7

9 Evaluation

Evaluation of whether or not cracking, detachment or other damage has occurred

10 Test report

The test report shall include with reference to this standard:

 type and designation of product tested;

 number of production batch and date of manufacture;

 material used and conditioning of the material strip (substrate);

 curing conditions and, if required, the type of medium exposure;

 test temperature;

 number of test, test pieces;

 test result;

 conditions deviating from this standard or specifically agreed;

 date of test;

 department and person responsible

BSI is the national body responsible for preparing British Standards and other

standards-related publications, information and services.

BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited.

British Standards Institution (BSI)

BSI Group Headquarters

389 Chiswick High Road London W4 4AL UK

About us

We bring together business, industry, government, consumers, innovators

and others to shape their combined experience and expertise into standards

-based solutions.

The knowledge embodied in our standards has been carefully assembled in

a dependable format and refined through our open consultation process

Organizations of all sizes and across all sectors choose standards to help

them achieve their goals.

Information on standards

We can provide you with the knowledge that your organization needs

to succeed Find out more about British Standards by visiting our website at

bsigroup.com/standards or contacting our Customer Services team or

Knowledge Centre.

Buying standards

You can buy and download PDF versions of BSI publications, including British

and adopted European and international standards, through our website at

bsigroup.com/shop, where hard copies can also be purchased

If you need international and foreign standards from other Standards Development

Organizations, hard copies can be ordered from our Customer Services team.

Subscriptions

Our range of subscription services are designed to make using standards

easier for you For further information on our subscription products go to

bsigroup.com/subscriptions.

With British Standards Online (BSOL) you’ll have instant access to over 55,000

British and adopted European and international standards from your desktop

It’s available 24/7 and is refreshed daily so you’ll always be up to date

You can keep in touch with standards developments and receive substantial

discounts on the purchase price of standards, both in single copy and subscription

format, by becoming a BSI Subscribing Member

PLUS is an updating service exclusive to BSI Subscribing Members You will

automatically receive the latest hard copy of your standards when they’re

revised or replaced

To find out more about becoming a BSI Subscribing Member and the benefits

of membership, please visit bsigroup.com/shop.

With a Multi-User Network Licence (MUNL) you are able to host standards

publications on your intranet Licences can cover as few or as many users as you

wish With updates supplied as soon as they’re available, you can be sure your

documentation is current For further information, email bsmusales@bsigroup.com.

Revisions

Our British Standards and other publications are updated by amendment or revision

We continually improve the quality of our products and services to benefit your business If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre.

Copyright

All the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person

or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system

or transmitted in any form or by any means – electronic, photocopying, recording

or otherwise – without prior written permission from BSI Details and advice can

be obtained from the Copyright & Licensing Department.

Useful Contacts:

Customer Services Tel: +44 845 086 9001 Email (orders): orders@bsigroup.com Email (enquiries): cservices@bsigroup.com Subscriptions

Tel: +44 845 086 9001 Email: subscriptions@bsigroup.com Knowledge Centre

Tel: +44 20 8996 7004 Email: knowledgecentre@bsigroup.com Copyright & Licensing

Tel: +44 20 8996 7070 Email: copyright@bsigroup.com